Which of the following sequences of events is most characteristic of a generalized plant life cycle?
A. sporophyte ® mitosis ® spore ® gametophyte ® gamete ® zygote
B. sporophyte ® meiosis ® spore ® gametophyte ® gamete ® zygote
C. gametophyte ® meiosis ® spore ® sporophyte ® gamete ® zygote
D. gametophyte ® mitosis ® spore ® sporophyte ® gamete ® zygote
B. sporophyte ® meiosis ® spore ® gametophyte ® gamete ® zygote
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Fish and sharks sense vibrations in the water that may be caused by prey. The lateral line system of these fish and shark detects this motion through the action of mechanoreceptors known as:
A. hair cells B. statocysts C. semicircular canals D. stereocilia
Conservation biologists conduct a population viability analysis to determine ____
a. whether an environment is too badly degraded to support a species b. how large a population must be to ensure its long-term survival c. likely source populations d. likely sink populations e. the annual reproduction rate of a population
The process of morphogenesis:
A: must come before differentiation. B: is the process by which different cell types arise. C: is the increase in body size. D: sets the developmental fate of a cell. E: is the shaping of differentiated cells into the multicellular body and its organs.
One of the ways that two species can be compared, and information about the genetic basis of human diseases extracted, is by using their sequenced genomes and
A. looking at the allelic differences. B. investigating the introns. C. exchanging genomic information between them. D. looking at the conserved sequences.